• 대한기계학회:학술대회논문집
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• 대한기계학회 2007년도 춘계학술대회B
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• pp.2327-2332
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• 2007

This study investigates on the inhalation force improvements of hood consisted one of the local ventilation systems attached the new device named as gas-guidance-device for removed a pollution source. The numerical method applying finite element method is calculated the velocity and pressure distributions of a moving fluid at the beginning and the inside of a hood with and without the gas-guidance-device in hood. And, the experimental study is measured the wind velocity using the anemometer at the same condition of numerical study. Also, the optimum shape of gas-guidance-device which is suitable for hood shape derived from the numerical and experimental results. The results of this study is supplied the important data to an industrial field for control of a pollution source in the engineering aspect. Moreover, the introduced technique of hood attached the gas-guidance-device is very useful to remove the harmful materials such as dust and waste happened in the manufacturing factory.

• 환경영향평가
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• 제20권6호
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• pp.857-866
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• 2011

This research categorized EIA target highways into following three types in order to minimize non-point source pollution from highway runoff. 1. Big drainage basin. 2. Small drainage basin. 3. Bridge section. The Natural, Filter and Swirl-Type devices were evaluated in terms of removal efficiency of TSS, BOD, COD, T-N, T-P, compatibility of site selection, economic feasibility, and maintenance convenience through which the final BMP was selected. According to the removal efficiency result, the area of Big and Small Drainage basin and bridge section had higher removal efficiency with natural facility than that of the Filter or Swirl-Type device. To make appropriate selection of highways'BMP for non-point source pollution, this study will aim to contribute to building more environmentally friendly highways by proposing the selection process that is made of 5 stages. 1. Selecting the target drainage basin. 2. Selecting the land for the mitigation facility. 3. Analysing the ease of maintenance. 4. Technically evaluating each installation. 5. Evaluating the effective implementation methods.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2002년도 학술발표회 발표논문집
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• pp.417-420
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• 2002

VFS는 침전물, 영양물질, 농약 등이 지표수로 유입하는 것을 감소시킬 수 있는 유용한 BMP이다. VFS의 식생의 종류는 목초, 관목 및 나무가 있으나 우리 나라와 같이 비점원오염 관리를 목적으로 하는 경우에는 목초가 가장 적당한 식생이다. VFS의 효과는 토양특성, 배수면적, 지형과 지변경사, 식생의 품질과 토지이용과 기후에 지배된다. 그리고 주기적인 VFS의 관리는 비점원오염을 관리하는데 중요한 요소이다. 식생의 정화능력을 이용한 VFS는 비점원오염 관리에 매우 효과적인 것으로 밝혀지고 있다. 그러나 VFS 독자적인 적용보다는 저류지와 같은 다른 기법과 동시에 적용하는 복합적인 관리대책을 강구하는 것이 더 효과적이다. VFS의 폭은 토양 특성, 배수면적, 지면 경사, 식생의 종류, 토지 이용도 등에 따라서 다르나 대체로 10m 정도가 적당할 것으로 사료된다. 그러나 보다 신뢰성 있는 VFS의 설계기준은 실제 시공과 사후 효과분석을 통하여 많은 자료를 축적한 후에 얻을 수 있을 것이다.

• Environmental Engineering Research
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• 제18권3호
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• pp.199-208
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• 2013

This study intended to develop an integrated governance model and find measures to manage nonpoint source (NPS) pollutions in watershed management. To reach this goal, this study has analyzed NPS pollution management policies in Korea and has employed statistical methods such as expert Delphi survey, analysis of variance, and factor analysis. As a result, this study has found that the favored basic organization form was a private-public cooperative council. The necessary governance-based NPS pollution management measures determined through this study are as follows: to build collaboration mechanisms including those related to motivation provision, trust building, capacity building, and making optimal regulations; to employ financial resources based on principles such as 'polluter-pays', 'recipient-pays', and 'general-tax-source'; and to develop several programs, including system improvement, pilot and management projects, and publicity.

• 환경영향평가
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• 제18권6호
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• pp.393-399
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• 2009

The water of rivers and lakes are affecting by point and nonpoint source pollutions. The point source pollution can be controlled by establishing the treatment plants. However, nonpoint source pollution by various human activities is not easy to be controlled because it is difficult to determine the exits of the water flow and have many exit points. Due to contribution of nonpoint source pollution, the achievement ratio of water quality in rivers and lakes is not high. TMDL is the outstanding water quality control policy because all of the pollutant loadings from the watershed area are counting on the input loads. Our aqua-ecosystem has self-purification process by biological, physical and ecological processes. The self-purification process can remove the pollutant load from background concentrations. Usually forest area is main source of background concentrations. In Korea, about 70% of the national boundary area consists of mountains. This study is conducting as part of long-term monitoring to determine the Event Mean Concentration during a storm. The monitoring was performed on a broad-leaved tree area.

• 한국농공학회지
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• 제44권5호
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• pp.96-105
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• 2002

As an useful water purification system for non-point source pollution in rural watersheds, interests in constructed wetlands are growing at home and abroad. It is well known that constructed wetlands are easily installed, no special managemental needs, and more flexible at fluctuating influent loads. They have a capacity for purification against nutrient materials such as phosphorus and nitrogen causing eutrophication of lentic water bodies. The Constructed Wetland Design Model (CWDM), developed through this study is consisted mainly of Database System, Runoff-discharge Prediction Submodel, Water Quality Prediction Submodel, and Area Assessment Submodel. The Database System includes data of watershed, discharge, water quality, pollution source, and design factors for the constructed wetland. It supplies data when predicting water quality and calculating the required areas of constructed wetlands. For the assessment of design flow, the GWLF (Generalized Watershed Loading Function) is used, and for water quality prediction in streams estimating influent pollutant load, Water Quality Prediction Submodel, that is a submodel of DSS-WQMRA model developed by previous works is amended. The calculation of the required areas of constructed wetlands is achieved using effluent target concentrations and area calculation equations that developed from the monitoring results in the United States. The CWDM is applied to Bokha watershed to appraise its application by assessing design flow and predicting water quality. Its application is performed through two calculations: one is to achieve each target effluent concentrations of BOD, SS, T-N and T-P, the other is to achieve overall target effluent concentrations. To prove the validity of the model, a comparison of unit removal rates between the calculated one from this study and the monitoring result from existing wetlands in Korea, Japan and United States was made. As a result, the CWDM could be very useful design tool for the constructed wetland in rural watersheds and for the non-point source pollution management.

• 한국지리정보학회지
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• 제3권4호
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• pp.63-72
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• 2000

본 연구의 목적은 GIS와 RS(Landsat TM, KOMPSAT EOC) 데이터를 이용한 AGNPS(Agricultural Nonpoint Source Pollution) 모형의 적용성을 판단하기 위한 것이다. AGNPS 모형은 잘 알려진 분포형 강우사상 모형으로써 이 모형은 밭의 시비수준과 축산농가의 오염 부하 수준을 적용할 수 있어 이를 효율적으로 관리할 수 있는 방법을 평가 할 수 있다. 본 연구의 대상 유역은 경기도 안성군 고산면(정동리, 야동리, 쌍령리)에 위치하고, 20개의 소규모 축산 농가가 산재해 있는 면적 $4.12km^2$ 내에 소유역이다. AGNPS 모형의 입력 데이터는 Arc/Info, GRASS, ER-Mapper, Idrisi를 사용하여 구축되었다. 모형의 보정 및 검증을 위해 사용된 강우 자료는 1시간 간격으로 관측된 1999년의 4개의 강우사상(5월 18일, 7월 29일, 9월 10일, 9월 20일)을 사용하였고, 수질 측정은 4개의 지점에서 측정된 실측자료를 사용하였다.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 1998년도 공동 심포지엄 및 추계학술발표회
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• pp.221-224
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• 1998

Environmental pollution is continuously increasing with the economic growth and industrial development. With this trend, soil and groundwater pollution problem has been surfaced as important social issues. Recently, Korean government promulgated the Soil Environment Conservation Act. But there are many problems to control sound soil quality management. Anthropogenic source of pollution such as waste landfill, pesticides, fertilizer, underground storage oil tanks is important as well as natural source such as acid rain and forest fire. The regulation should be expanded to include groundwater preservation as well as soil quality, because soil pollution is closely related to groundwater pollution. Therefore, legal regulations must be expanded to these facilities and take into account technical feasibility and finance.

• 한국환경과학회지
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• 제17권4호
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• pp.451-459
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• 2008

This study was carried out forecasting of pollution inflow of the Small Mountainous Catchment, namely; Seolma-cheon experimental catchment. Pollutographs of DO, BOD, T-N, Conductivity, T-p, pH. COD, SS from this catchment were obtained from in-situ data of total ten events using QUAL2E-PULS model. From the analysis results, between up stream(Sabang-bridge) and down stream (Memorial-bridge, outlet) obtained relation formula of water quality component. Determination coefficient of relation formula, Conductivity, COD, BOD, DO, pH, T-N, T-P, and SS showed high relation of $0.87{\sim}0.99$. The increases of DO, BOD, COD, and pH concentration of Memorial-bridge were associated with pollution inflow by road building far 2.25km from Sabang-bridge to down stream. The analysis results of QUAL2E-PULS simulation and up/down stream relation formula, pollution amounts of DO, BOD, COD and pH increased at Memorial-bridge and pollution source site. Therefore, pollution inflow can be forecasted exactly by up/down stream relation formula at pollution source site.

• Ecology and Resilient Infrastructure
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• 제7권4호
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• pp.294-299
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• 2020

본 연구에서는 팔당 상수원 보호구역내 적정 도로비점오염 저감시설의 계획을 위해 대상 도로구간의 현장조사를 통해서 보호구역내 도로의 특성을 파악하고 이에 적용가능한 도로를 선정하고 시설을 시범적용하여 그 유효성을 검증하였다. 팔당 상수원 보호구역은 도로주변 토양의 배수등급이 높아 침투시설을 지양하고 도로사면을 통한 자연적인 오염원 저감방법을 적용하는 것이 적정하다. 앞으로 도로비점저감시설의 계획 및 설계에서 대상도로의 특성에 대한 분석 후 저감계획을 세우는 것이 적정하며 이는 관련 규정 및 설계 기준에도 반영되어야 할 것이다.